Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 134.7	$ 18.2	$ 86.9
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	(7.6)	(14.3)	(1.7)
Net gains (losses) on derivatives	(2.7)	2.6	4.6
Gains (losses) on defined benefit plans	5.1	2.5	(8.4)
Other comprehensive income (loss)	0.2	(14.4)	(14.7)
Comprehensive income	$ 134.9	$ 3.8	$ 72.2